Vulcanizing device for tire casings



Aug. 21, 192s..

H. RIKSON VULCAIZING DEVICE FOR TIRE CASINGS Filed Nov. 12. 192'? 2 Sheets-Sheet 1 fri/M072;

IN VEN TOR.

Kw2-fw ATTORNEYS.

Aug. 21, 192s. 11,681,178

H. ERxKsoN VULCANIZING DEVIICI.`l FOR TIRE GASINGS Filed Nov. 12, 1927 2 sheets-sheet 2 A TTORNEYS.

Patented Aug. 21, 1928.` y p UNITED .STATE 1,681,178 PATIENT oFFicEf.

HARRY Brunson, or LOWELL, M'AssAcnUsnrTs.

VULCANIZING DEVICEVFOR TIRE CASINGS.

`Application tiled November This invention appertains to devices Vfor repairing automobile tire casings or shoes and one of the primary objects of the present invention. is to provide a vulcanizing machine having a self. containedrboiler for the genera` tion ofheat or steam, thereby eliminating the `necessity ofpr'ovidin'g an extraneous boiler or equivalent apparatus;

Another salient object of the invention is the provision of a mold body havinga cavity therein forming aboilcnwith novel means for supporting the boiler and novel means for holding a: tire-casing in the moldj;

A further object of the invention is thc provision of a vulcanizing machine lfor tire casings Vembodying a novel cavity or boiler Vmold comprising a topV plate or mold member anda cavity body riveted or otherwise secured. to the plate, the cavity bodyv forming in conjunction with va plate a complete boiler for the heating of said plate.

A further object of the invention is the provision of lbead plates engaging the beads of a tire casing and for operating in conjunction with the mold plate, and a pressure screw for holding and urging the beadV plates into engagement with the tire casing beads.

A still further object of the invention is to provide a novel tire casing vulcanizing machine of the above character, which is durable and eiiicient in use, one that will be simple and easy to manufacture and one which can be placed upon the market at a reasonable cost.

'With these and other objects in View, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described, claimed, and'illustra-ted in the accompanying drawing, in which drawing: Y

Figure 1 is a front elevation of the complete vulcanizing machine;

Figure 2 is an end elevation'of the complete vulcanizing machine; n

Figure 3 is a longitudinal section through a novel cavity mold with all fittings removed;

Figure 4 is a top plan view of a novel cavity mold; y

Figure 5 is a central transverse section y through the novel cavity mold;

Referring to the drawings in detail, whereV in similar reference characters `designate corresponding parts throughout the several views, the letter A Agenerally indicates the improved vulcanizing machine, which comprises a stand B, a cavity mold C arranged v12, 1927; Yserial No. 232,890.

upon the stand B, a casing clamp D, and the heating device E for the cavity mold.

The stand BV can be constructed from any desiredmateriail and in any desired way, but as shown is formed by diverging corner legs 10'y whichy can be formed from angle iron.'

art, as will be hereinafter pointed out.

The cavity mold C is preferably constructedjfrom boiler plate and will comply with the specifications for miniature. boilers.

This mold comprises an upper mold plate 15 and a lower cavity body portion 1K6. These plates are press dra-wn and drop forged. The mold plate 15 is curved arcuatelybothlongitudinally and transversely to conform to a configuration of a tire casing or shoe and the edges of this plate are provided with marginal attaching flanges 17. y

The cavity body 16 is likewise curved both transversely and longitudinally and its marginal edges are provided with attaching flanges 18. T he flanges 17 Aand 1S can be riveted together as at 19, or can be welded, where 'welding is permissible. It is to be noted that the body 16 extends a considerable distance below the mold plate and forms a chamber 2() which chamber receives the. water for the generation of steam, as will be later described, the complete mold forming a miniature boiler.

Suitable fittings are provided for the mold and boiler, such as a water gage 21, clearly shown in Figures 1 and 2. A safety valve 22 is carried by the upper end of the body 16 so as to prevent the steam pressure in the mold kfrom rising beyond a predetermined point.`

A steam gage 23 can also be connected with the yupper end of the mold. A water filler valve 24 is provided for the boiler and a water level valve 25 is likewise provided.

p In order to effectively hold a tire casing in proper position in the mold, a bead clamping mechanism D is provided. This bead clamp! ing mechanism D comprises a pair of bead are curved to conform to the configuration of a tire casing and are preferably shaped to match a bead of a tire casing being repaired.

plates 26 and 27. The bead plates Q6 and 27 1 Pressure blocks 28 are Carried by the pressure screw Qt) for engaging the bead plates Q6 and 2T and this screw is supported by a nut 3()4 threaded thereon and connected with a supportingl bracket 3l, which has one end hingedly connected to the niold and its opposite end detaehably connected to the inold, whereb v the bracket can be swungr laterally off the niold to permit the placingr of a tire casing in position in the inold.

Heating ineans E is provided for the boiler and is connected with the stand 10 in any desired way. The heating means E can be ot' any desired type, such as a kerosene or gasoline burner, or as shown an illuminating gas burner 35.

In operation of the improved device the boiler ie part'ljv illed with water, a sufficient space heine" lett in the chamber 9.0 for the accumulation ot Stealn and the burner 35 is then lit. After the boiler has becoine heated and a sutlieient quantity of steam has been generated by the heatingr device E, the tire easing is placed on the plate l5 and treated in the usual way` as well known by persons Skilled in this art and the easing is held in place by means ot' the bead plates 2G and 2T.

An air bag (not shown) is placed in the tire easing, so that the easing will be held in tirar contact with the heated surface ot the inold plate l5.

By having the boiler a direct part of the lnold. all extraneous parts are eliminated and further the heat lroin the boiler itself is utilized for heating the mold plate which prevents waste ot' heat and insures the proper temperature of the niold plate 15.

Freni the foregoing`l it can be seen that a compact and simple tire easing vuleanizing machine has been provided which will etfee- -`ively accomplish the purpose intended.

Changes in details may be inade without departing from the spirit or the scope of this in\\'ention, but what I elaiin as new is:

In a tire rulcanizing device. a combined mold plate and boiler comprising an independent top plate of sheet. metal forming a inollL a body portion ot sheet metal detininf.:` a boiler. and ont-turned flanges on the body concentric with the sides ot the top plate, said top plate and flanges being rigidly se.- eured together.

ln testimony whereof I atix my signature.

HARRY ERIKSON. 

